If consumers respond to a 10% price reduction by buying twice as much of a particular good, we would conclude that:
A.the price elasticity of demand at the original price was greater than one.
B.there was excess demand at the original price.
C.there was excess supply at the original price.
D.the price elasticity of demand at the original price was less than one.
正确答案：the price elasticity of demand at the original price was greater than one.
